Before choosing the fruit bag, be sure to look at the quality of the bag paper. Here's how to understand the bag paper.
First of all, except for striped paper, fruit bag papers are mostly yellow and black composite papers. Take a piece of paper or a fruit bag, and pour a small amount of white wine of 34-38 degrees on one side of the yellow (note that you cannot use high-alcohol liquor). Shake off the liquor in about one minute. Look at the reverse side. A small number of dots pass through or are not transparent. High-quality paper, if thoroughly penetrated in a short time, is poor quality paper.
Secondly, a small amount of clean tap water or well water is sprinkled on the yellow surface of the composite paper. The surface of the paper is hydrophobic, but there is watering and the surface has a kind of greasy feel. If water does not spill on the paper after it is sprinkled with water, it looks like the lotus leaf has a waxy texture and is a poor quality paper. Because the surface of the paper was coated with a hydrophobic agent, the hydrophobic agent was only applied to the surface of the paper. At that time, the water repellent was very good, but after being hung on the tree, it was exposed to the sun for a while, the hydrophobic agent was gone, and the fruit bag was permeable. Now.
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